Will i need to lay the shed on to a base of paving slabs and do these need to cover the whole floor area or can i get away with slabs just where the shed walls are, and whats the best way to contain the slabs on the slight slope does a frame of wood make sense so that i can build up to the horizontal flat level and float over the tree roots.. I am planning to put a shed with a concrete base in the area where the trees were. no part of the shed will be over the stumps but each stump will have a shed corner about 12" away. i have dug down about 18" next to one stump and have found a number of large roots, many of these spreading under the site of the shed.. The issue is that roots absorb air as well as water and are close to the surface. if you cover more than one third of the root area, which is from the base of the tree to the drip line, then you could see some die back when the roots no longer have enough access to air..
Placing our shed under the maple tree in our back yard was important for many reasons. in fact, i had to obtain a zoning variance to build my shed because some of the tree's roots were in the way of my foundation.. About a foot or so to the left of the tree there is a large visible root at the surface and the ground is raised a little. just beyond this is where the shed would end. the soil is clay. ideally i'd like to make a full concrete base, but fear the tree roots would break the raft over time.. The shed foundation should support the weight of the shed and spread it evenly over the ground on which it rests 2. protect the wood at the base of the shed from moisture coming up from the ground. 3. include features to stop vegetation growing beneath and around the shed. frost and action of tree roots). a foundation for a shed is.
